Question
Which of the following best describes the purpose of
data wrangling?Solution
Data wrangling, also known as data munging, involves transforming and cleaning raw data into a structured format suitable for analysis. This process includes handling missing values, correcting inconsistencies, standardizing formats, and often requires domain knowledge to ensure accuracy and relevance. Effective data wrangling makes analysis more efficient and reliable by ensuring the data is clean and usable. Option A is incorrect because storing raw data does not involve any transformation. Option B is incorrect as model building follows data wrangling. Option D is incorrect because creating dashboards is for data presentation, not wrangling. Option E is incorrect because KPIs are derived post-wrangling and analysis.
- Determine the smallest perfect square that is exactly divisible by 9, 15, 20, and 35. Then, find the remainder when this perfect square is divided by 88.
- If '48x2y' is a five-digit number which is divisible by 72, then find the value of (x - y).
- Find the median of the following observations:
13, 14, 12, 15, 11, 16, 19, 10, 20, 18, 17 Find the sum of the first 25 even natural numbers.
Find the difference between minimum and maximum value of 'f' such that '2f4896' is always divisible by 3.
If a number is decreased by 30 and divided by 12, the result is 20. What would be the result if 200 is subtracted from that number and then it is divide...
What should come in place of the question mark (?) in the following question?
3/8 × 4/7 ? = 5376
Find the least 4-digit number which, when divided by 14, 35, and 20, leaves a remainder of 9 in each case.
When a number is divided by 35 remainder is 23. Find the remainder when three times of the same number is divided by 35.